Problem with string conversion

[hacknayan]

Hi, I have this code that wil hash the return value of harddrive serial number but I'm having some problem.

DWORD serialNumber = { 0 };
std::string buffer;

GetVolumeInformation(("C:\\"), NULL, NULL, &serialNumber, NULL, NULL, NULL, NULL);
std::hash<_STD string> hs;
buffer = hs(std::to_string((_ULONGLONG)serialNumber));

std::cout << buffer << std::endl;
std::cout << hs(std::to_string((_ULONGLONG)serialNumber)) << std::endl;

As you can see I have 2 cout, the first one was printing a sysmbol like a small T and the second one was working fine. But the one I need is the first one but I don't know what is wrong.

[MiiNiPaa]

hash function returns value of std::size_t, not string. You can assign number to string bur you will gen unexpected results.

[hacknayan]

how can I convert it to string?

[MiiNiPaa]

std::to_string is created to convert values to string